Efecto de los sólidos suspendidos volátiles del licor mezclado en el ensuciamiento de las membranas durante la operación de un bioreactor con membranas a corto y largo plazo

Effect of mixed liquor volatile suspended solids on membrane fouling during short and long-ter operation of membrane bioreactor

EDSON BALTAZAR ESTRADA ARRIAGA Petia Mijaylova Nacheva LILIANA GARCIA SANCHEZ (2015, [Artículo])

El objetivo del estudio fue examinar el impacto de diferentes concentraciones de sólidos suspendidos volátiles del licor mezclado en el ensuciamiento de las membranas en un bio-reactor con membranas sumergidas (BRMS)en periodos cortos y largos de operación durante el tratamiento del agua residual. Tres BRMS a escala laboratorio fueron operados bajo condiciones críticas, sub-críticas y condiciones de succión intermitente y retrolavados. En cortos tiempos de operación de los BRMS con concentraciones de licor mezclado de 4,200 y 6,150 mg SSVLM L-1, la resistencia hidráulica de las membranas se comportó de manera similar con un promedio de 5.0E+12 m-1, mientras para una concentración de 7,940 mg SSVLM L-1, su obtuvo una alta resistencia con valores de 1.7E+13 m-1. Los resultados mostraron que con concentraciones altas de biomasa la permeabilidad de las membranas disminuye debido a la formación de una biopelícula en la superficie de las membranas y a la presencia de Sustancia Poliméricas Extracelulares (SPE).

The aim of this study was to examine the impact of different Mixed Liquor Volatile Suspended Solids (MLVSS) concentrations on membrane fouling, in a submerged Membrane Bioreactor (MBR) at short and long-term MBR operation for wastewater treatment. Three laboratory-scale in a submerged MBR system were operated under critical flux, sub-critical flux, and an intermittent suction time and backwashing conditions. At short-term MBR operation with mixed liquors of 4,200 and 6,150 mg MLVSS L-1, the hydraulic resistance of membranes followed a same trajectory with averages of 5.0E+12 m-1, whereas for 7,940 mg MLVSS L-1, a high resistance of up to 1.7E+13 m-1 was obtained. The result showed that high biomass concentrations decreased to permeability due to a bio-layer formed in the membrane surface and high Extracellular Polymeric Substance (EPS).

Biorreactores Sólidos suspendidos volátiles INGENIERÍA Y TECNOLOGÍA

Effect of mixed liquor volatile suspended solids on membrane fouling during short and long-term operation of membrane bioreactor

EDSON BALTAZAR ESTRADA ARRIAGA PETIA MIJAYLOVA NACHEVA LILIANA GARCIA SANCHEZ (2015, [Artículo])

The aim of this study was to examine the impact of different Mixed Liquor Volatile Suspended Solids (MLVSS) concentrations on membrane fouling, in a submerged Membrane Bioreactor (MBR) at short and long-term MBR operation for wastewater treatment. Three laboratory-scale in a submerged MBR system were operated under critical flux, sub-critical flux, and an intermittent suction time and backwashing conditions. At short-term MBR operation with mixed liquors of 4,200 and 6,150 mg MLVSS L-1, the hydraulic resistance of membranes followed a same trajectory with averages of 5.0E+12 m-1, whereas for 7,940 mg MLVSS L-1, a high resistance of up to 1.7E+13 m-1 was obtained. The result showed that high biomass concentrations decreased to permeability due to a bio-layer formed in the membrane surface and high Extracellular Polymeric Substance.

Biorreactor de membrana Saturación de la membrana Sólidos suspendidos volátiles Sustancias poliméricas extracelulares BIOLOGÍA Y QUÍMICA